Validation is done by the contractors and by the product owners.

\subsection{Product owner validation}

The product owners first validated during prioritization in week three. Here anything the product owners didn't validate they gave the priority 0. The second validation occurred during week 5 there the product owners went through a checklist of all requirements and checked all requirements that they validated. Requirements that hasn't been validated at any validation or specified as dropped are dropped. Below is the list of requirements and crosses the weeks they were validated. The product owners validated through checking that the requirement was validated from checklists. The goal requirements were all validated in week 6.

\begin{longtable}{|l|c|c|c|}
 \hline
  Requirement & Week 3 & Week5 & Week 6 \\
  Address & & X & X\\ 
  Colour & & X & X\\
  Distance & & X & X\\
  Error code & & X & X\\
  Icon & & X & X\\
  Location & & X & X\\
  Mean rating value & & & \\
  OS identifier & & X & X\\
  Open hours & & X & X\\
  POI pin type & & X & X\\
  Rating & & & \\
  Reviews & & & \\
  Sharing statistics & & X & X\\
  Statistics & & X & X\\
  Timestamp & & X & X\\
  Title & & X & X\\
  User pin type & & X & X\\
  About screen & & X & X\\
  Add to favourites & & X & X\\
  Alert messages & X & X & X\\
  Blacklisted & & & \\
  Calendar Event & & X & X\\
  Cancelable POI & & X & X\\
  Cancelable & & X & X\\
  Category & & X & X\\
  Changeable icon & & X & X\\
  Check-in & & X & X\\
  Compass & & X & X\\
  Copy location & & X & X\\
  Coupon & & X & X\\
  Customisation & & X & X\\
  Developer contact & & X & X\\
  Directions & X & & \\
  Display version info & & X & X \\
  E-mail integration & & X & X \\
  Error margin radius & & X & X \\
  Error message & & X & X\\
  EULA & & X & X\\
  Execution & & X & X\\
  Facebook message wall & & X & X\\
  Facebook message & & X & X\\
  Facebook & & X & X\\
  Favourites & & X & X\\
  Feedback & & X & X\\
  Fetch POIs & X & X & X\\
  Filter favourites & X & X & X\\
  Filter radius & X & X & X\\
  Filter & & X & X\\
  From specified location & X & X & X\\
  Google+ integration & & X & X\\
  Google+ message & & X & X\\
  Hybrid view & & X & X\\
  Images & & X & X\\
  Info view & & X & X\\
  Introduction tutorial & & X & X\\
  Launch screen & & X & X\\
  Location info & X & X & X\\
  Map arrow & & X & X\\
  Map pin & & X & X\\
  Map support & & X & X\\
  Map view & & X & X\\
  Network message & & X & X\\
  Network timeout alert & & X & X\\
  News & & X & X\\
  No Internet connection & & X & X\\
  No data traffic alert & & X & X\\
  No server connection & & X & X\\
  Notification support & & X & X\\
  Notify developers & & X & X\\
  OS support & & X & X\\
  Open in google maps & & X & X\\
  Opening hours & X & X & X\\
  Panable view & X & X & X\\
  Pin types & & X & X\\
  Push notification & & X & X\\
  Rate message & & X & X\\
  Rating & & & \\
  Rate POI & & X & X\\
  Review POI & & & \\
  Reflects distance in its size & X & X & X\\
  Regular map view & & X & X\\
  Release message & & X & X\\
  Remove favourite & & X & X\\
  Remove pin & & X & X\\
  Retake tutorial & & X & X\\
  SMS integration & & X & X\\
  Satellite view & & X & X\\
  Scalable & X & X & X\\
  Send feature request & & X & X\\
  Send statistics & & X & X\\
  Share & & X & X\\
  Shareable & & X & X\\
  Sharing support & & X & X\\
  Shows distance & X & X & X\\
  Shows locations & X & X & X\\
  Sortable & & X & X\\
  Specifiable location & X & X & X\\
  Support for Android & X & X & X\\
  Support for iOS & X & X & X\\
  Suspendable & X & X & X\\
  Tapable & & X & X\\
  Timeout error & & X & X\\
  Transform to a map pin & & X & X\\
  Twitter & & X & X\\
  URL scheme & & X & X\\
  User location & X & X & X\\
  Version message & & X & X\\
  Viewability toggle & & X & X\\
  Zoomable & & X & X\\
  Food Finder & & X & X\\
  Android Marketplace guidelines & & X & X\\
  Application marketplace guidelines & & X & X\\
  Application resume rigidity & X & X & X\\
  Arrow size & & X & X\\
  Colour blind friendly & & X & X\\
  Easy to understand & & X & X\\
  Error response time & X & X & X\\
  Execution rigidity & X & X & X\\
  Execution time & & X & X\\
  Google API License & & X & X\\
  Image resolution & X & X & X\\
  Location error margin & X & X & X\\
  Map correct overlap & & X & X\\
  Maximum arrows & & X & X\\
  Maximum pins & X & X & X\\
  Maximum radius & X & X & X\\
  Maximum ratings & & & \\
  Maximum reviews & & & \\
  Network timeout & & X & X\\
  Possible favourites & & X & X\\
  Radius visibility & & X & X\\
  Startup time & & X & X\\
  Time efficient & & & \\
  Tutorial coverage & & & \\
  Understandable & & X & X\\
  Written in English & & X & X\\
  iOS appstore guidelines & & X & X\\
 \hline
\end{longtable}
 
\subsection{Supervisor validation}

After each release the supervisor validated parts of the release and commented errors.

\subsection{Tracing product goals}

The goals were profit, customer popularity, finding stores and OS support. The profit consideration (G1) motivated the change of focus to a field with no competition that thereby would be more likely to have a larger profit. The requirements Fetch POI (see page \pageref{functionFetch POIs}) and Show POI (see page \pageref{functionShow POIs}) fulfills the goal of (G2) finding stores. The requirements Support for Android (see page \pageref{qualitySupport for Android}) and Support for iOS (see page \pageref{qualitySupport for iOS}) fulfills the goal (G3) OS support.